Greg Stikeleather is a serial entrepreneur who currently invests in both for-profit and non-profit ventures. He serves on the advisory board for the Richard Dawkins Foundation for Reason and Science, the Center for Applied Rationality, and other groups supporting critical thinking and science. In the 1990s, Greg founded and was President and CEO of aha! software which produced and patented digital-ink processing technology – aha! was acquired by Microsoft. Greg then led another start up, Portola Communications, in the development of high-performance Internet email software. He served as President and CEO of Portola through its acquisition by Netscape. Greg was also a managing partner at Sofinnova Ventures, a San Francisco venture capital firm, for several years, and in 1999 cofounded Headsprout, a learning sciences company. He served as President and CEO of Headsprout until early 2006, when its award-winning early reading program was being used in schools, homes, and learning centers across the United States, and around the world. Greg was trained in the learning sciences with a graduate degree in experimental psychology. In the 1980s, he applied his learning science research as an instructional and interface designer at Apple, where he developed and ran the first usability testing lab during the creation of Apple’s first graphical user interface.